Tatsuo Sugie

TL;DR: In this paper, the authors describe the requirements for high reliability in the systems (diagnostics) that provide the measurements in the ITER environment, which is similar to those made on the present-day large tokamaks while the specification of the measurements will be more stringent.

TL;DR: In this article, the technological challenges associated with preparing and installing diagnostic systems on ITER are summarized and the solutions that have been developed to overcome them are described, areas where further developments are needed are highlighted.

TL;DR: In this article, the authors provide an overview of new results in the field of first mirrors, covering the manufacturing of ITER mirror prototypes, investigations of mitigation of deposition and mirror cleaning and the predictive modelling of the mirror performance in ITER.

TL;DR: In this article, spectral profiles of the line emitted from the divertor region of JT-60U have been observed with a high-resolution spectrometer and analyzed by simulation with a three-dimensional neutral particle transport code.

TL;DR: A nearly steady-state edge-localized-mode-free {ital H} mode with a duration up to 3.3 sec was established without significant impurity accumulation in limiter discharges of a tokamak with lower-hybrid current drive for the first time.